advtrains.git - Advtrains mod for minetest.

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Diffstat (limited to 'advtrains_train_steam/textures/advtrains_wagon_box_inv.png')

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vector = {} function vector.new(a, b, c) if type(a) == "table" then assert(a.x and a.y and a.z, "Invalid vector passed to vector.new()") return {x=a.x, y=a.y, z=a.z} elseif a then assert(b and c, "Invalid arguments for vector.new()") return {x=a, y=b, z=c} end return {x=0, y=0, z=0} end function vector.equals(a, b) return a.x == b.x and a.y == b.y and a.z == b.z end function vector.length(v) return math.hypot(v.x, math.hypot(v.y, v.z)) end function vector.normalize(v) local len = vector.length(v) if len == 0 then return {x=0, y=0, z=0} else return vector.divide(v, len) end end function vector.round(v) return { x = math.floor(v.x + 0.5), y = math.floor(v.y + 0.5), z = math.floor(v.z + 0.5) } end function vector.apply(v, func) return { x = func(v.x), y = func(v.y), z = func(v.z) } end function vector.distance(a, b) local x = a.x - b.x local y = a.y - b.y local z = a.z - b.z return math.hypot(x, math.hypot(y, z)) end function vector.direction(pos1, pos2) local x_raw = pos2.x - pos1.x local y_raw = pos2.y - pos1.y local z_raw = pos2.z - pos1.z local x_abs = math.abs(x_raw) local y_abs = math.abs(y_raw) local z_abs = math.abs(z_raw) if x_abs >= y_abs and x_abs >= z_abs then y_raw = y_raw * (1 / x_abs) z_raw = z_raw * (1 / x_abs) x_raw = x_raw / x_abs end if y_abs >= x_abs and y_abs >= z_abs then x_raw = x_raw * (1 / y_abs) z_raw = z_raw * (1 / y_abs) y_raw = y_raw / y_abs end if z_abs >= y_abs and z_abs >= x_abs then x_raw = x_raw * (1 / z_abs) y_raw = y_raw * (1 / z_abs) z_raw = z_raw / z_abs end return {x=x_raw, y=y_raw, z=z_raw} end function vector.add(a, b) if type(b) == "table" then return {x = a.x + b.x, y = a.y + b.y, z = a.z + b.z} else return {x = a.x + b, y = a.y + b, z = a.z + b} end end function vector.subtract(a, b) if type(b) == "table" then return {x = a.x - b.x, y = a.y - b.y, z = a.z - b.z} else return {x = a.x - b, y = a.y - b, z = a.z - b} end end function vector.multiply(a, b) if type(b) == "table" then return {x = a.x * b.x, y = a.y * b.y, z = a.z * b.z} else return {x = a.x * b, y = a.y * b, z = a.z * b} end end function vector.divide(a, b) if type(b) == "table" then return {x = a.x / b.x, y = a.y / b.y, z = a.z / b.z} else return {x = a.x / b, y = a.y / b, z = a.z / b} end end


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